Newly married and brimming with excitement for her honeymoon on the Amalfi Coast, Claire has no idea her husband Julian has quietly canceled the tickets behind her back—and given them to his childhood sweetheart, Poppy. More brutal still: their marriage certificate has been locked in his safe all along, never filed with the registry. Their marriage was never real to begin with. She doesn't cry or make a scene. She simply buys a one-way ticket to London. She thinks escaping will let her start over—but Julian teams up with Poppy to destroy two years of her hard work across the conference table, and then causes her to miscarry in front of everyone. She takes her medication, goes to therapy, and claws her way back from rock bottom, inch by inch. When Julian flies halfway around the world to beg for her forgiveness, she says only one thing, calmly: "I want you and Poppy to grow old together." That sentence is crueler than any revenge. In the end, she finds a new partner and a new life. Meanwhile, Julian and Poppy spend their marriage fighting endlessly, the alliance between their two families collapses, and all they have left for the rest of their lives is endless regret.